A simple end-to-end test of the CSU34016 exercise system

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Description

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Prerequisites

1. Haskell stack is installed on the machine you are using.

2. You have also installed makex1

3. Your current directory is the one containing this directory (Exercise1)

Task

1. Open a command-line window and navigate to folder containing Exercise1.

2. Run ‘makex1’ and supply requested information.

This will add file Exercise1/src/Ex1.hs.

3. Navigate into Exercise1.

4. Enter stack install.

5. If this is your first time running stack in one of the CSU34016 Exercise folders, you may have to wait while stack ensures it has access to the correct versions of both the Haskell compiler and libraries. This delay should only happen once.

6. Eventually stack will compile and build and install the code. A lot of logging “stuff” will scroll past, ending with something like this:

“`

Copied executables to /Users/butrfeld/.local/bin:

– ex1

“`

7. You can run the program by simply typing ex1.

Right now this will fail with a message like:

“`

Running Exercise1

ex1: Prelude.undefined

CallStack (from HasCallStack):

error, called at libraries/base/GHC/Err.hs:79:14 in base:GHC.Err

undefined, called at src/Ex1.hs:5:9 in main:Ex1

“`

8. Your task is to edit src/Ex1.hs to implement f1 so it computes the right result.

When it does, you should see something like:

“`

Running Exercise1

f1(11111111) = 11111153

“`

9. To submit, simply upload only your revised Ex1.hs file to Blackboard.